Some early surprises in the first set of matchups: No. 1 seed Tim Tebow is struggling against Jimmer Fredette, and another big name, Tiger Woods, is in trouble against Rory McIlroy. Voting for those first four matchups ends around midnight; for the four below, voting will end around noon Thursday.

I can’t tell if the 6-11 matchup here is more like two upstarts going at it – say, Butler vs. George Mason – or two underwhelming powers slugging it out – Georgetown vs. Kansas.